Hi I am Chlorine. I am most commonly found in swimming pools to kill off all bacteria. I am never found as a pure form in nature, and I form many compounds including: table salt, rock salt, and hydro-chloric acids.
Hi, I am Scandium. I am most commonly found in Euxenite and Gadolinte. I am found in atheletic equipment, and I am used to make high entensity lamps. I also form. many compounds like: Scandium Oxide, Scandium Acetate, Scandium Carbonate, Scandium Nitrate, Scandium Sulfate.
Hello, my name is Vanadium. I am most commonly found in hard steels and I am used as an alloy. I am found in nature as a mineral. Lastly, I form a compound called Sulfuric Acid.
Hello there, I am Selenium. A lot of people depend on me, for their cell phones, PSPs, Lazer printers, and other electronics. I am a very pretty ruby red color or I can be a blue-metallic color. Besides being used in electronics, I can make you healthy be preventing cancer and heart disease. When I join with Sulfide, I can be used to treat your oily skin or dandruff in your hair.
Elements: An element is a pure substance that cannot be broken down into simpler substances by physical or chemical means. A pure substnace is a substance in which there is only one type of particle.
3/7/08
Here is our interpretation for our Lab Conclusion:
When the salt dissolves in water, all bonds break.The Sodium Chloride bond breaks and becomes sodium and chlorine.Water molecules that were attracted to each other break apart.The sodium and chlorine are attracted to the water, creating a new bond. In this process, energy is absorbed and energy is released.We can measure the chemical energy, by taking the temperature.When the chemicals absorb energy, there is an endothermic change, causing the temperature to decrease.When the chemicals lose energy, there is an exothermic change and the temperature of the solution increases.
3/6/08
A suspension is a mixture that is not able to become a solution. The solvent is either not able to be dissolved, or the mixture is not uniform. :)
DID YOU KNOW?!?!?!
Did you know that colloids can be very dangerous to drivers??
If there is fog out, the fog will scatter the light from the car's headlights, making it very difficult for the driver to see. ((P.S.--->A colloid is a mixture in which the particles are dispersed throughout, but are not heavy enough to settle out. ))
3/6/08
Tooday we did a lab. We added Calcium Chloride to water to see how the chemical affected the temperature. This picture shows our data in the expirement. calcium_chloride.JPG
SARAH'S NOTES!!
3/26/08
This is a great web-game to demonstrate some of the expirements that Dalton preformed.
Constants- the amount of water, the type of water, the temperature of the water, and the number of mixes Procedure:
Measure 20 mL of water.
Place a small amount (tip of lab scoop) of each compound in a seperate test tube.
Add the water to a test tube and record your observations.
Mix the test tube five times and record your observations.
Results-
Compound
Observations
Ability to dissolve in water
Copper Sulfate
Specks are at the bottom
partially dissolved
specks are still at the bottom
water turned blue
Partially dissolved
Zinc Oxide
Opaque while water with little specks at the bottom
White
Didnt dissolve
Sulfer
Particles floating
Transparent
Didnt dissolve
Sucrose
Transparent
clear
Disolved
Sodium Chloride
Transparent
Clear
Disolved
KRISTIN'S NOTES!!
3/7/08
Conclusion web for sodium chloride:
Opening Sentence
A. made the water temperature go down.
Data
A. Varation
1. very consistent the temperature always went down.
B. Relationship
1.As the amount of solute increased the temperature went down.
Hypothesis
I thought that the temperature would go down with more solute. It was correct because the temperature went down when more solute was added.
Interpretation
A. concepts
1. absorbing thermal energy causing the temperature of the water to go down
2. chemical energy and how the bonds are formed and broken
B. Applying concepts
1.sodium chloride broke into sodium and chlorine. the water moleucules break apart and the sodium and chlorine moleucules are attracted to the water moleucules.
As more sodium chloride was added the temperature of the water decreased. Every time we added more solute the temperature went down not at a constent rate but it always went down.
Energy 2-1-08 Today we did a lab that would help us determine where kinetic engery comes from when a car is rolling down a hill. ~We used a toy car and timed how long it took for it to roll down a meter stick. Here are some of the calculations that we found:
|| Height of Ramp || Length of Ramp || Mass of Toy Car || Weight of Toy Car || Trial 1 || Trial 2 || Trial 3 || Average Times || || .12m || .9m || .037kg || .397N || 1.10s || 1.32s || 1.37s || 1.265s ||
|| Average Speed || Final Speed || Kinetic Energy at Bottom || Gravitational Potential Energy at the Top || || .714m/s || 1.428m/s || .04047J || .04764J ||
Renewable- solar, hydroelectricity,wind, geothermal, and biomass
Nonrenewable- fossil fuels (coal, natural gas and petroleum), and nuclear.
There are many forms of energy. Which include Chemical energy, Electrical energy, Sound energy, Light energy, Nuclear energy, Kinetic energy, Potential energy, and Mechanical energy. The two main types of energy are Kinetic energy and Potential energy. Energy is the ability to do work. Work is the action that results when a force causes an object to move in the direction of the force. They are both measured in Joules. One Joule is a Newton Meter.
This first figure is a pie chart showing the contribution of renewable energy to U.S. energy consumption in 2004. Moving clockwise you have petroleum, nuclear power, renewable energy ( broken out into solar energy, wind energy, geothermal energy, hydropower, and biomass waste), coal and coal coke, and natural gas. For more information, contact: National Energy Information Center at 202-586-8800.
This chart shows the percentage of each renewable energy soure consumed in the United States.
This is Sarah, Monica, and Kristin's Wiki space
Elementary Introductions
Hi I am Chlorine. I am most commonly found in swimming pools to kill off all bacteria. I am never found as a pure form in nature, and I form many compounds including: table salt, rock salt, and hydro-chloric acids.
Hi, I am Scandium. I am most commonly found in Euxenite and Gadolinte. I am found in atheletic equipment, and I am used to make high entensity lamps. I also form. many compounds like: Scandium Oxide, Scandium Acetate, Scandium Carbonate, Scandium Nitrate, Scandium Sulfate.
Hello, my name is Vanadium. I am most commonly found in hard steels and I am used as an alloy. I am found in nature as a mineral. Lastly, I form a compound called Sulfuric Acid.
Hello there, I am Selenium. A lot of people depend on me, for their cell phones, PSPs, Lazer printers, and other electronics. I am a very pretty ruby red color or I can be a blue-metallic color. Besides being used in electronics, I can make you healthy be preventing cancer and heart disease. When I join with Sulfide, I can be used to treat your oily skin or dandruff in your hair.
Chemistry
Monica's Notes!! :)
3/11/08
This is our PowerPoint of all of our data: Temperature & Solutions Lab
Elements: An element is a pure substance that cannot be broken down into simpler substances by physical or chemical means. A pure substnace is a substance in which there is only one type of particle.
3/7/08
Here is our interpretation for our Lab Conclusion:
When the salt dissolves in water, all bonds break. The Sodium Chloride bond breaks and becomes sodium and chlorine. Water molecules that were attracted to each other break apart. The sodium and chlorine are attracted to the water, creating a new bond. In this process, energy is absorbed and energy is released. We can measure the chemical energy, by taking the temperature. When the chemicals absorb energy, there is an endothermic change, causing the temperature to decrease. When the chemicals lose energy, there is an exothermic change and the temperature of the solution increases.3/6/08
A suspension is a mixture that is not able to become a solution. The solvent is either not able to be dissolved, or the mixture is not uniform. :)
DID YOU KNOW?!?!?!
Did you know that colloids can be very dangerous to drivers??If there is fog out, the fog will scatter the light from the car's headlights, making it very difficult for the driver to see.
((P.S.--->A colloid is a mixture in which the particles are dispersed throughout, but are not heavy enough to settle out. ))
3/6/08
Tooday we did a lab. We added Calcium Chloride to water to see how the chemical affected the temperature. This picture shows our data in the expirement.
calcium_chloride.JPG
SARAH'S NOTES!!
3/26/08
This is a great web-game to demonstrate some of the expirements that Dalton preformed.
http://web.visionlearning.com/dalton_playhouse/ad_loader.html
(It is from www.visionlearning.com)3/17/08
Scientists say the solutions are homogenus systems. This means that it is the same through out. 3/11/08
lab with monica and kristin.pptSolutions Lab
Liquid in a test tube observations:
- Transparent (see through)
- Light blue in color
-Low Viscosoty (flows easily)
-Uniform (same throughout)
Interpretation: The liquid is a solution -Methanol * -Blue dye *
Question: Will different compounds form solutions in water?
Independent Variable- type of compound
Levels:
|| Copper Sulfate || Zinc Oxide || Sulfur || Sodium Chloride || Sucrose || || 4 Trials || 4Trials || 4 Trials || 4 Trials || 4 Trials || Dependent Variable- Ability to dissolve in water
Constants- the amount of water, the type of water, the temperature of the water, and the number of mixes Procedure:
Results-
partially dissolved
specks are still at the bottom
water turned blue
White
Transparent
clear
Clear
KRISTIN'S NOTES!!
3/7/08
Conclusion web for sodium chloride:
Opening Sentence
A. made the water temperature go down.
Data
A. Varation
1. very consistent the temperature always went down.
B. Relationship
1.As the amount of solute increased the temperature went down.
Hypothesis
I thought that the temperature would go down with more solute. It was correct because the temperature went down when more solute was added.
Interpretation
A. concepts
1. absorbing thermal energy causing the temperature of the water to go down
2. chemical energy and how the bonds are formed and broken
B. Applying concepts
1.sodium chloride broke into sodium and chlorine. the water moleucules break apart and the sodium and chlorine moleucules are attracted to the water moleucules.
As more sodium chloride was added the temperature of the water decreased. Every time we added more solute the temperature went down not at a constent rate but it always went down.
Energy 2-1-08 Today we did a lab that would help us determine where kinetic engery comes from when a car is rolling down a hill. ~We used a toy car and timed how long it took for it to roll down a meter stick. Here are some of the calculations that we found:
|| Height of Ramp || Length of Ramp || Mass of Toy Car || Weight of Toy Car || Trial 1 || Trial 2 || Trial 3 || Average Times || || .12m || .9m || .037kg || .397N || 1.10s || 1.32s || 1.37s || 1.265s ||
|| Average Speed || Final Speed || Kinetic Energy at Bottom || Gravitational Potential Energy at the Top || || .714m/s || 1.428m/s || .04047J || .04764J ||
Renewable- solar, hydroelectricity,wind, geothermal, and biomass
Nonrenewable- fossil fuels (coal, natural gas and petroleum), and nuclear.
There are many forms of energy. Which include Chemical energy, Electrical energy, Sound energy, Light energy, Nuclear energy, Kinetic energy, Potential energy, and Mechanical energy. The two main types of energy are Kinetic energy and Potential energy. Energy is the ability to do work. Work is the action that results when a force causes an object to move in the direction of the force. They are both measured in Joules. One Joule is a Newton Meter.
This chart shows the percentage of each renewable energy soure consumed in the United States.